Retinitis Pigmentosa News and Research

Retinitis pigmentosa (RP) is the name given to a group of inherited eye diseases that affect the retina (the light-sensitive part of the eye). RP causes the breakdown of photoreceptor cells (cells in the retina that detect light). Photoreceptor cells capture and process light helping us to see. As these cells breakdown and die, patients experience progressive vision loss. The most common feature of all forms of RP is a gradual breakdown of rods (retinal cells that detect dim light) and cones (retinal cells that detect light and color). Most forms of RP first cause the breakdown of rod cells. These forms of RP, sometimes called rod-cone dystrophy, usually begin with night blindness. Night blindness is somewhat like the experience normally sighted individuals encounter when entering a dark movie theatre on a bright, sunny day. However, patients with RP cannot adjust well to dark and dimly lit environments.

Second Sight Medical Products, Inc., a developer, manufacturer and marketer of implantable visual prosthetics to provide useful vision to blind patients, today announced that the Company has received conditional approval from the U.S. Food and Drug Administration to begin the Orion™ Cortical Visual Prosthesis System feasibility clinical study.

The brain is very plastic, which means that the brain is able to adapt to new signals. In the case of bionic vision restoration, the photoreceptors have died, the brain is not receiving anything biologically, and you are going to then send something which is artificial, prosthetic, and has been created outside the body.

Understanding how dietary essential fatty acids work may lead to effective treatments for diseases and conditions such as stroke, Alzheimer's disease, age-related macular degeneration, Parkinson's disease and other retinal and neurodegenerative diseases.

Thirty-six percent of Hispanic families in the U.S. with a common form of retinitis pigmentosa got the disease because they carry a mutation of the arrestin-1 gene, according to a new study from researchers at The University of Texas Health Science Center at Houston School of Public Health.

Epigenetics is a system of information that lies atop DNA to control which genes are accessible, active and inactive. Each cell in your body essentially has identical DNA, but they have different patterns of expression.

Using the gene-editing tool CRISPR/Cas9, researchers at University of California San Diego School of Medicine and Shiley Eye Institute at UC San Diego Health, with colleagues in China, have reprogrammed mutated rod photoreceptors to become functioning cone photoreceptors, reversing cellular degeneration and restoring visual function in two mouse models of retinitis pigmentosa.

Researchers at Okayama University report in the Journal of Artificial Organs the promising performance of a retinal prosthesis material when implanted in rats. The material is capable of converting external light stimuli into electric potentials that are picked up by neurons.

A team of engineers at the University of California San Diego and La Jolla-based startup Nanovision Biosciences Inc. have developed the nanotechnology and wireless electronics for a new type of retinal prosthesis that brings research a step closer to restoring the ability of neurons in the retina to respond to light.

During Low Vision Awareness Month, the National Eye Institute (NEI), part of the National Institutes of Health, is highlighting new technologies and tools in the works to help the 4.1 million Americans living with low vision or blindness.

A unique gene-editing method that efficiently inserts DNA into genes located in dividing and non-dividing cells of living rats has been developed by a team of international researchers, including scientists from KAUST.

Vision scientists may have discovered how to reduce pedestrian collisions in crowded and chaotic open space environments like bus terminals, shopping malls and city plazas involving individuals with partial blindness.

Leveraging the mass production benefit that MultiBrain® technology brings to neurohistology, NSA can accelerate the R&D preclinical and safety assessment processes many fold and perform them less expensively. This results in faster times for a potential drug to move from R&D to clinical trials and sooner for use in people.

Pittcon is an analytical conference, so naturally my talk will be about analytical chemistry and how analytical chemistry will become increasingly important in delivering healthcare solutions, not only for rich people, but also, hopefully, for poor people across the world.

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